define-lazy-prop

Define a lazily evaluated property on an object

MIT 3 个版本
lazy property properties prop define object value lazily laziness evaluation eval execute getter function fn memoize cache defer deferred
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安装
npm install define-lazy-prop
yarn add define-lazy-prop
pnpm add define-lazy-prop
bun add define-lazy-prop
README

define-lazy-prop

Define a lazily evaluated property on an object

Useful when the value of a property is expensive to generate, so you want to delay the computation until the property is needed. For example, improving startup performance by deferring nonessential operations.

Install

$ npm install define-lazy-prop

Usage

import defineLazyProperty from 'define-lazy-prop';

const unicorn = {
	// …
};

defineLazyProperty(unicorn, 'rainbow', () => expensiveComputation());

app.on('user-action', () => {
	doSomething(unicorn.rainbow);
});

API

defineLazyProperty(object, propertyName, valueGetter)

object

Type: object

Object to add the property to.

propertyName

Type: string

Name of the property to add.

valueGetter

Type: Function

Called the first time propertyName is accessed. Expected to return a value.

版本列表
3.0.0 2021-04-14
2.0.0 2019-04-10
1.0.0 2017-01-15